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Journal of Clinical Microbiology, 12 1996, 3007-3011, Vol 34, No. 12
B Lina, M Valette, S Foray, J Luciani, J Stagnara, DM See and M Aymard
Nasal swab from patients with acute flu-like illness were evaluated for the
presence of respiratory viruses in the Rhone-Alpes region of France from 1
October 1994 through 2 May 1995. The relative frequencies and seasonal
distributions of the specific viruses were assessed. In addition, virus
type was correlated with specific clinical signs and symptoms. During the
study, 962 samples were collected by 75 medical practitioners participating
in the Groupe Regional d'Observation de la Grippe surveillance network. One
or more viruses were detected from 348 samples (36.1%), including 108
respiratory syncytial virus (RSV), 64 influenza virus A type H3N2, 47
influenza virus B, 64 coronavirus, 35 rhinovirus, 22 adenovirus, 5
enterovirus, and 3 parainfluenza-fluenza strains. There were 16 mixed
infections. RSV infections peaked in the early winter, and influenza
viruses A and B infections peaked during the late winter and early spring.
There were two peaks of coronavirus infections (late fall and late winter).
Other viruses were detected at lower levels throughout the study period.
Patients from whom adenovirus was isolated were significantly more likely
to have a fever of > 39.5 degrees C than were patients with other
detectable viruses (P < 0.001). Furthermore, there was a significant
correlation between influenza and cough (P < 0.01) and RSV and
bronchiolitis (P < .001). Thus, the current study defined the overall
and relative frequencies of respiratory virus detection from nasal swab
specimens in patients with an acute flu-like illness in the Rhone-Alpes
region of France during a 7-month period. Correlation with clinical signs
and symptoms and provisional conclusions regarding seasonality were also
determined.
Copyright © 1996 by the American Society for Microbiology. All rights reserved.
Surveillance of community-acquired viral infections due to respiratory viruses in Rhone-Alpes (France) during winter 1994 to 1995
Laboratoire de Virologie, Centre National de Reference de la Grippe- France Sud, Lyon, France.
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